يعرض 1 - 5 نتائج من 5 نتيجة بحث عن '"wave propagation"', وقت الاستعلام: 0.83s تنقيح النتائج
  1. 1
    مورد إلكتروني

    المؤلفون: Xavier Coromina Bosch

    الوصف: This system is the result of the final degree project of Xavier Coromina Bosch of the Degree in Civil Engineering at the UPC (Universitat Politècnica de Catalunya). The main objective of the project was to create this system and methodology capable of obtaining results from the waves on a beach quickly and reliably with the buoy data on deep or intermediate waters. In particular, the system has been set up along the coast of Badalona. For this reason, it was necessary to obtain a sufficiently extensive and previously generated wave database from a wave propagation model. Given the conditions of the project, the third generation SWAN model was used to obtain the database that propagates the wave across the domain based on the boundary conditions that are imposed on it. In this way, having and generating this set of data and through a series of interpolation processes, a system capable of obtaining wave values at any point in the domain very quickly was devised, and without the need to create a specific model for each of the cases.

  2. 2
    تقرير

    المساهمون: Universitat Politècnica de Catalunya. Departament de Teoria del Senyal i Comunicacions, Universitat Politècnica de Catalunya. RSLAB - Grup de Recerca en Teledetecció

    الوصف: Radiació i Propagació ; Preprint

    وصف الملف: 11 p.

    العلاقة: Fabregas, F.; Torres, F. "Transitori en línies de transmissió ideal". 2014.; http://hdl.handle.net/2117/21941Test

  3. 3
    تقرير

    المساهمون: Universitat Politècnica de Catalunya. Departament de Teoria del Senyal i Comunicacions, Universitat Politècnica de Catalunya. RSLAB - Grup de Recerca en Teledetecció

    الوصف: Radiació i Propagació (RP) Bloc Bàsic Graus ETSETB Anàlisi de rendiment acadèmic i satisfacció Curs 2012-13 Q2 ; Preprint

    وصف الملف: 20 p.

    العلاقة: Torres, F.; Fabregas, F.; Lopez, C. "RP: anàlisi de rendiment acadèmic i satisfacció 2012-13 Q2". 2013.; http://hdl.handle.net/2117/21895Test

  4. 4

    المصدر: Journal of Industrial Engineering and Management; 2015: Vol.: 8 Núm.: 1
    UPCommons. Portal del coneixement obert de la UPC
    Universitat Politècnica de Catalunya (UPC)
    Journal of Industrial Engineering and Management, Vol 8, Iss 1, Pp 51-71 (2015)

    الوصف: Purpose: Vehicle intelligent position systems based on Received Signal Strength Indicator (RSSI) in Wireless Sensor Networks (WSNs) are efficiently utilized. The vehicle's position accuracy is of great importance for transportation behaviors, such as dynamic vehicle routing problems and multiple pedestrian routing choice behaviors and so on. Therefore, a precise position and available optimization is necessary for total parameters of conventional RSSI model. Design/methodology/approach: In this paper, we investigate the experimental performance of translating the power measurements to the corresponding distance between each pair of nodes. The priori knowledge about the environment interference could impact the accuracy of vehicles' position and the reliability of parameters greatly. Based on the real-world outdoor experiments, we compare different regression analysis of the RSSI model, in order to establish a calibration scheme on RSSI model. Findings: Empirical experimentation shows that the average errors of RSSI model are able to decrease throughout the rules of environmental factor n and shadowing factor n respectively. Moreover, the calculation complexity is reduced, as an innovative approach. Since variation tendency of environmental factor n, shadowing factor n with distance and signal strength could be simulated respectively, RSSI model fulfills the precision of the vehicle intelligent position system. Research limitations/implications: In this research, it is not evident to find the variation trend between the environmental factor n, shadowing factor n and the signal strength in view of our proposed approach. Originality/value: In our study, a methodology to calibrate the parameters of RSSI model is proposed with smaller errors. At the same time, three primary conventional model is evaluated based on the fitted regression.

    وصف الملف: text/html; application/pdf

  5. 5

    المساهمون: Universitat Politècnica de Catalunya. Departament de Teoria del Senyal i Comunicacions, Universitat Politècnica de Catalunya. RSLAB - Grup de Recerca en Teledetecció

    المصدر: Recercat. Dipósit de la Recerca de Catalunya
    Universitat Jaume I
    UPCommons. Portal del coneixement obert de la UPC
    Universitat Politècnica de Catalunya (UPC)

    الوصف: Radiació i Propagació (RP) Bloc Bàsic Graus ETSETB Anàlisi de rendiment acadèmic i satisfacció Curs 2012-13 Q2

    وصف الملف: application/pdf